component
SN74LS273DW
Public Made by Adomby adom
Texas Instruments Flip Flops, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297
{
"schema_version": 1,
"type": "component",
"slug": "sn74ls273dw",
"title": "SN74LS273DW",
"brief": "Texas Instruments Flip Flops, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"logic ics",
"sn74ls273dw",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "SN74LS273DW",
"manufacturer": "Texas Instruments",
"package": "SOIC-20-300mil",
"pin_count": 20,
"category": "Logic ICs",
"subcategory": "Flip Flops",
"datasheet": "https://www.ti.com/cn/lit/gpn/sn74ls273",
"parts": {
"symbol": "sn74ls273dw.kicad_sym",
"footprint": "sn74ls273dw.kicad_mod",
"model_3d": "sn74ls273dw-hero.glb",
"model_3d_plain": "sn74ls273dw.glb",
"model_3d_step": "sn74ls273dw-etched.step",
"model_3d_step_plain": "sn74ls273dw.step",
"lbr": "sn74ls273dw.lbr"
},
"distributor_links": {
"lcsc": "C206102",
"digikey": "296-26512-5-ND",
"mouser": "595-SN74LS273DW"
},
"distributor_check": {
"checked_at": "2026-10-11T15:10:37Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-26512-5-ND",
"status": "found",
"lifecycle": "Obsolete"
},
"mouser": {
"pn": "595-SN74LS273DW",
"status": "found",
"lifecycle": "Obsolete"
}
},
"pins": [
{
"number": "1",
"name": "CLR",
"type": "input",
"description": "Active-low direct clear input; a low level forces all Q outputs low regardless of the clock and D inputs."
},
{
"number": "2",
"name": "1Q",
"type": "output",
"description": "Flip-flop 1 output, which takes the D1 level on the positive-going clock edge and is cleared low by CLR."
},
{
"number": "3",
"name": "1D",
"type": "input",
"description": "Data input to flip-flop 1; the level must meet the 20 ns setup time before the rising clock edge and be held for 5 ns after it."
},
{
"number": "4",
"name": "2D",
"type": "input",
"description": "Data input to flip-flop 2; the level must meet the 20 ns setup time before the rising clock edge and be held for 5 ns after it."
},
{
"number": "5",
"name": "2Q",
"type": "output",
"description": "Flip-flop 2 output, which takes the D2 level on the positive-going clock edge and is cleared low by CLR."
},
{
"number": "6",
"name": "3Q",
"type": "output",
"description": "Flip-flop 3 output, which takes the D3 level on the positive-going clock edge and is cleared low by CLR."
},
{
"number": "7",
"name": "3D",
"type": "input",
"description": "Data input to flip-flop 3; the level must meet the 20 ns setup time before the rising clock edge and be held for 5 ns after it."
},
{
"number": "8",
"name": "4D",
"type": "input",
"description": "Data input to flip-flop 4; the level must meet the 20 ns setup time before the rising clock edge and be held for 5 ns after it."
},
{
"number": "9",
"name": "4Q",
"type": "output",
"description": "Flip-flop 4 output, which takes the D4 level on the positive-going clock edge and is cleared low by CLR."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Network ground terminal; all voltage values in the datasheet are referenced to this pin."
},
{
"number": "11",
"name": "CLK",
"type": "input",
"description": "Buffered clock input; the flip-flops trigger on the positive-going edge, with clock frequency specified from 0 to 30 MHz."
},
{
"number": "12",
"name": "5Q",
"type": "output",
"description": "Flip-flop 5 output, which takes the D5 level on the positive-going clock edge and is cleared low by CLR."
},
{
"number": "13",
"name": "5D",
"type": "input",
"description": "Data input to flip-flop 5; the level must meet the 20 ns setup time before the rising clock edge and be held for 5 ns after it."
},
{
"number": "14",
"name": "6D",
"type": "input",
"description": "Data input to flip-flop 6; the level must meet the 20 ns setup time before the rising clock edge and be held for 5 ns after it."
},
{
"number": "15",
"name": "6Q",
"type": "output",
"description": "Flip-flop 6 output, which takes the D6 level on the positive-going clock edge and is cleared low by CLR."
},
{
"number": "16",
"name": "7Q",
"type": "output",
"description": "Flip-flop 7 output, which takes the D7 level on the positive-going clock edge and is cleared low by CLR."
},
{
"number": "17",
"name": "7D",
"type": "input",
"description": "Data input to flip-flop 7; the level must meet the 20 ns setup time before the rising clock edge and be held for 5 ns after it."
},
{
"number": "18",
"name": "8D",
"type": "input",
"description": "Data input to flip-flop 8; the level must meet the 20 ns setup time before the rising clock edge and be held for 5 ns after it."
},
{
"number": "19",
"name": "8Q",
"type": "output",
"description": "Flip-flop 8 output, which takes the D8 level on the positive-going clock edge and is cleared low by CLR."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage; recommended range is 4.75 V to 5.25 V for the SN74LS273 with a 7 V absolute maximum."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pinout is taken from the TOP VIEW of the DW/N package on page 1, cross-checked against the logic sym; Per the package option addendum (page 7), SN74LS273DW is listed as Obsolete with 'Call TI' for avail"
],
"pages_sent": 20,
"cost_usd": 0.0796,
"at": "2026-10-11T15:10:20"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/sn74ls273",
"pages": 20,
"sha256": "f1fcdda29424ef03",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "sn74ls273dw.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
10.3,
12.8,
2.75
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
"checked": "2026-10-11",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "sn74ls273dw-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
10.3,
12.8,
2.75
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "d4cbc151eb4e9ef29bff4a98b83666ea758347668999bad689763a8bbe1fbfac",
"checked": "2026-10-11",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOIC-20-300mil",
"Category": "Logic ICs",
"Pins": "20"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"sn74ls273dw"
],
"discovery_pitch": "SN74LS273DW (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"sn74ls273dw.kicad_sym",
"sn74ls273dw.kicad_mod",
"sn74ls273dw.glb",
"sn74ls273dw.step",
"sn74ls273dw.lbr",
"docs/hero.png",
"docs/sn74ls273dw-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"sn74ls273dw-hero.glb",
"sn74ls273dw-hero.overlay.json"
],
"visibility": {
"public": true
}
}